/Engine/Plugins/VirtualProduction/Takes/Source/TakesCore/Public/TakeRecorderSourceProperty.h
This class is used by Microphone sources to track the currently selected channel. It aslo contains a local cache of the max channel count for the currently selected audio device.
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FAudioInputDeviceChannelProperty
int32
AudioInputDeviceChannel
The currently selected channel from the details panel for this source